Stuck in a moment that I can't get out of

So I wake up this morning and there it is. Tijuana! A name that's stuck in my head since morning. Ever had a word stuck in your head for unknown reasons? It's mildly disconcerting, like a distant splinter that the eye can barely see and stubbornly refuses to ignore. So every few minutes now, this word keeps popping into my head while I'm in the middle of something; and all I care to know about it is that it's a Mexican city. And this is not the first time something like this has happened; at least the third. I think the last one was some European politician who hung around mysteriously, stalking me for a couple of days and then disappeared in a puff of smoke (ok, maybe not that last one). So, Tijuana, how long will you be staying?